Side by side

Borealis Watch Co. Estoril 300 GMTvsHamilton Khaki Navy Scuba Automatic GMT 43mm Bronze

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

Estoril 300 GMT
Borealis Watch Co.Estoril 300 GMT
MSRP $600

At a glance

10 of 29 specs differ
Diameter
Estoril 300 GMT41.50mm
Khaki Navy Scuba Automatic GMT 43mm Bronze43mm
Power Reserve
Estoril 300 GMT40h
Khaki Navy Scuba Automatic GMT 43mm Bronze80h
Water Resistance
Estoril 300 GMT300m
Khaki Navy Scuba Automatic GMT 43mm Bronze300m
MSRP
Estoril 300 GMT$600
Khaki Navy Scuba Automatic GMT 43mm Bronze$1,675

Full specifications

Case

6 specs
Category
Diver
GMT
Diameter
41.50mm
43mm
Thickness
13.5mm
13.9mm
Lug-to-Lug
47mm
52mm
Lug Width
20mm
22mm
Material
Stainless Steel
Titanium

Crystal & Dial

1 specs
Lume
BGW9
None

Movement

2 specs
Caliber
Miyota 9075
H-14
Power Reserve
40h
80h

Pricing

1 specs
MSRP
$600
$1,675

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What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Borealis Watch Co. Estoril 300 GMT

Owners widely praise the Borealis Watch Co. Estoril 300 GMT for its excellent value, robust build quality, and crisp dial, with reviewers highlighting its exceptionally bright BGW9 lume and dive-ready ceramic bezel. Some owners appreciate the brushed and polished finishes, though one owner noted a desire for a white-painted second hand. The included NATO strap is considered too thick with a loose weave, and the sapphire bezel insert is seen by some as a minor aesthetic departure from its inspirations. Overall, owners rate the Borealis Watch Co. Estoril 300 GMT highly for its impressive build quality and value.

Hamilton Khaki Navy Scuba Automatic GMT 43mm Bronze

The Hamilton Khaki Navy Scuba Automatic GMT 43mm Bronze is widely praised for its excellent fit and finish, pleasing proportions with a 22mm lug width, and a matte dial that minimizes glare. Owners appreciate its 300 meters of water resistance, 80-hour power reserve from the H-14 automatic GMT movement, and the fact that it wears smaller than its 43mm size suggests. Some owners find the flush crown guards and rock-solid feel make it an outstanding beater dive watch. However, opinions are split on the date placement, dial markers, and logo text size, with some preferring a cleaner look and faster setting due to the lack of a date window, while others note the absence of a lumed bezel pip. One owner dislikes the trade-offs for the 80-hour power reserve, preferring a smoother second hand sweep and more torque, and finds the bezel action tight.

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